Q:

The degree of dissociation ( $α$ ) of a weak electrolyte, $A_{x} B_{y}$ is related to van't Hoff factor (i) by the expression:

$1 . α = \frac{x + y + 1}{i - 1}$

$2 . α = \frac{x + y - 1}{i - 1}$

$3 . α = \frac{i - 1}{x + y + 1}$

$4 . α = \frac{i - 1}{x + y - 1}$

A) 1 is correct	B) 2 is correct
C) 3 is correct	D) 4 is correct

Answer & Explanation Answer: D) 4 is correct

Explanation:

Van't Hoff factor (i) = $\frac{O b s e r v e d C o l l i g a t i v e P r o p e r t y}{N o r m a l C o l l i g a t i v e P r o p e r t y}$

$\begin{matrix} A_{x} B_{y} \\ 1 - α \end{matrix} \to \begin{matrix} x A^{+ y} \\ x α \end{matrix} + \begin{matrix} y B^{- x} \\ y α \end{matrix}$

Total Moles = $1 - α + x α + y α$ = $1 - α (x + y - 1)$

$i = \frac{1 + α (x + y - 1)}{1}$

$\Rightarrow α = \frac{i - 1}{x + y - 1}$

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: AIEEE

6 7274

Q:

It is necessary to sort a file before searching a particular item

A) True	B) False
C) May or may not be true	D) None of the above

Answer & Explanation Answer: C) May or may not be true

Explanation:

If less work is involved in searching a element than to sort and then extract, then we don’t go for sort

If frequent use of the file is required for the purpose of retrieving specific element, it is more efficient to sort the file.

Thus it depends on situation

Report Error

View Answer Report Error Discuss

Filed Under: Database
Job Role: Database Administration

2 7272

Q:

Which of the statements given below are correct?

A) Grigor Dimitrov won the Tennis 2017 ATP World Tour Finals Men's Singles.

B) In 2017, Sergio Aguero played for the Premier League team Liverpool.

C) In 2017, Rohit Sharma captained the IPL team Mumbai Indians.

A) Both A and C	B) Both A and B
C) A, B and C	D) None of these

Answer & Explanation Answer: A) Both A and C

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Sports
Exam Prep: Bank Exams

1 7271

Q:

State game of Madhya Pradesh?

A) Mallakhamba	B) Lagori
C) Kabaddi	D) Kho Kho

Answer & Explanation Answer: A) Mallakhamba

Explanation:

State_game_of_Madhya_Pradesh1552129369.jpg image

The State game of Madhya Pradesh is Mallakhamba.

Report Error

View Answer Report Error Discuss

Filed Under: Indian Geography
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO

11 7270

Q:

In which of the following mammals estrous cycle is absent ?

A) Rabbit	B) Horse
C) Cow	D) Monkey

Answer & Explanation Answer: D) Monkey

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Biology
Exam Prep: AIEEE , Bank Exams

19 7261

Q:

Cutaneous respiration occurs in

A) Cockroach	B) Salamander
C) Crab	D) Parrot

Answer & Explanation Answer: B) Salamander

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Biology

45 7255

Q:

Which of the following places is associated with Jainism

A) Kapilvastu	B) Pava
C) Prayag	D) Shravasti

Answer & Explanation Answer: B) Pava

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Indian History

5 7240

Q:

Cutting and peeling of onion brings tears to the eyes because of the presence of _____ ?

A) Amino acid	B) Sulfur
C) Carbon	D) Fat

Answer & Explanation Answer: B) Sulfur

Explanation:

Cutting and Peeling of onion brings Tears to the eyes because of presence of Sulphur in the cell.

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Bank Clerk , Bank PO

26 7236

Questions

Quick Links